Keyhole-guard.



K. 0SWALD. KEYHOLE GUARD. APPLICATION FILED JULY 17, 1912.

Patentd 001;, 28, 1913.

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' KOLMEN OSWALD, OF NEW YORK, N. Y.

KEYHOIIE'.- GUARD.

Specification of Letters Patent.

Patented Oct. 28,1913.

Application filed July 17, 1912. Serial No. 709,978.

To all whom it may concern Be it known that I, KOLMEN OSWALD, aHungarian citizen, and a resident of New York, in the county of New Yorkand State of New York, have invented certain new and useful Improvementsin Keyhole-Guards, of

My improved key-hole guard is particularly intended to be applied towatchmens clocks, and is so shown in the accompanying drawings; but thesaid guard is also adapted for use in many other connections, forexample, for use in connection with locks of various kinds.

My invention comprises a novel and improved key-hole guard, whichnormally closes a keyhole but is adapted to be pushed asideautomatically by a proper key introduced into such key-hole.

The object of my invention is to provide an improved and simplifiedkey-hole guard, readily applied to the cases of watchmens clocks, andother key-actuated mechanism, which guard shall be actuatedautomatically by a proper key as the latter is introduced into the clockor other key-actuated device.

I will now proceed to describe my invention with reference to theaccompanying drawings and will then point out the novel features inclaims. V

In the drawings: Figure 1 shows a side elevation of the case of awatchmans clock having my improved key-hole guard applied thereto. Fig.2 shows a horizontal sect-ion of the case of such clock and of therecessed guard plate within which the improved guard is partlycontained. Fig. 3 is a transverse section of the clock-case showing theinner side of the guard and the spring which actuates that guard. Fig. 4shows another section of the clock case, this view being taken on thesection line w00 of Fig. 2. Fig. 5 shows a side view of a key providedat its end with a beveled surface for actuating the key-hole guard; andFig. 6 is another side view of the key, taken from the left of Fig. 5.Fig. 7 shows a detail elevation of the guard plate.

I do not in these drawings illustrate the clock-work or key actuatedmechanism of a watchmans clock, as these features form no portion ofthepresent invention.

In the drawings, 1 designates the case of the clock, and 2 the coverthereof.

44 designates a recessed guard plate separed to the exterior of theclock case, within the recess 43 of which guard plate the keyhole guard,42, is mounted, said guard being normally in the position shown in Fig.2, in which position it closes the keyhole 37. Thiskey-hole guard isprovided, within the .clockcase, with a flanged portion 45 arranged tobe guided by the clock easel said. guard working in a slot 46' of theclock case. A spring4'? tends to hold the guard plate 42 closednormally. The guard is provided with a beveled; surface 48 which will beengaged by the end of a proper key, when that key is introduced into thekey hole, such key then pushing the key-hole guard. aside so as topermit the full introduction of the key. Figs. 5 and 6 illustrate such akey, 24, said key having at the end a beveled surface 49 which engagesthe beveled surface 48 of the key-hole guard when such key is introducedinto the key-hole.

lVhat I claim is 1.' The combination with a member having in it anaperture and having a guide slot for a guard for said aperture, of aguard forsaid aperture having a flanged portion on one side of saidapertured member, and having a rib projecting through said guide slot,said rib provided with an inclined face, normally in line with. saidaperture and adapted to be engaged by a key inserted to enter saidaperture.

2. The combination with a member having in it an aperture and having aguide slot for a guard for said aperture, of a guard for said aperturehaving a flanged portion on one side of said apertured member, andhaving a rib projecting through said guide slot, said rib provided withan inclined face, normally in line with said aperture and adapted to beengaged by a key inserted to enter said aperture, and spring meanstending to hold said guard in position to cover said aperture.

3. The combination with a member having in it an aperture and having aguide slot for a guard for said aperture, of a guard for said aperturehaving a flanged portion on one side of said apertured member, andhaving a rib projecting through said guide slot, said ri b provided withan inclined face and a recessed guard plate in front of said aperturedmember, and hav ing its aperture in line With the aperture of saidmember, and having a recess in which the said rib may Work.

4. The combination With a member having in it an aperture and having aguide slot fora guard for said aperture, a guard for said aperturehaving a flanged portion on one side of said apertured member, andhaving a rib projecting through said guide slot, said rib provided Withan inclined face, and a recessed guard plate in front of said aperturedmember and having its aperture in line With the aperture of said member,and having a recess in Which the said rib may Work, the inclined face ofsaid rib being normally in line With the aperture of said guard plate,of an instrument adapted to be inserted through said apertures of saidguard plate and apertured members, and having an inclined surfaceadapted to engage the inclined surface of said rib When so inserted, andthereby to press said guard aside.

5.- The combination With a member having in it an aperture and having aguide slot for a guard for said aperture, a guard for said aperturehaving a flanged portion on one side of said apertured member, andhaving a rib projecting through said guide slot, said rib provided Withan inclined face, a recessed guard plate in front of said aperturedmember and having its aperture in line With the aperture of said member,and having a recess in which the said rib may Work, the inclined face ofsaid rib being normally in line With the aperture of said guard plate,and a spring tending to hold said guard in line With said aperture, ofan instrument adapted to be inserted through said apertures of saidguard plate and apertured members, and having an inclined sur faceadapted to engage the inclined surface of said rib When so inserted, andthereby to press said guard aside.

In testimony whereof I have signed this specification in the presence oftwo subscribing Witnesses.

KOLMEN OSWALD.

Vvitnesses V H. M. MARBLE,

E. S. Ross.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner 01. Patents, Washington, D. G.

